Answer:
O D. violent realities of war
Explanation:
I had put the answer on a ScreenShot, so you can see what part is what.(I hope this helps you! Feel free to message me if you have any further questions :) Have a nice day!!)
The answer is "3). It appears to have been created to mark the unification of Egypt."
It isn't 1, as the Palette of Narmer is an Egyptian artwork, not Sumerian.
It isn't 2, as it doesn't feature cuneiform, but hieroglyphs.
It isn't 4, as the art isn't Mesopotamian, but Egyptian.